Presence detector for integration in luminaire. Automatic switching based on presence and light level. For automatic on/off switching of luminaires with electronic ballasts. “Bright-Out” function: the luminaire does not switch on the light sources if there is already sufficient light. A time delay and the light level for the “Bright-Out” function can be set with 2 potentiometers. Max. connection of 1 sensor. For max. 2 LED drivers.